import {
  IoTDataPlaneClient,
  ListNamedShadowsForThingCommand,
  ListNamedShadowsForThingCommandInput,
} from '@aws-sdk/client-iot-data-plane';
import {
  Request,
  Response,
} from '@softchef/lambda-events';

export async function handler(event: { [key: string]: any }) {
  const request = new Request(event);
  const response = new Response();
  try {
    const parameters: ListNamedShadowsForThingCommandInput = {
      thingName: request.parameter('thingName'),
    };
    if (request.has('nextToken')) {
      parameters.nextToken = request.get('nextToken');
    };
    const ioTDataPlaneClient = new IoTDataPlaneClient({});
    const { results, nextToken, timestamp } = await ioTDataPlaneClient.send(
      new ListNamedShadowsForThingCommand(parameters),
    );
    return response.json({
      thingShadows: results,
      nextToken: nextToken,
      timestamp: timestamp,
    });
  } catch (error) {
    return response.error(error);
  }
}